ＭＭ７１２０ Ａ型精密平面磨床立柱前后部存在温差，导致砂轮主轴偏斜，使磨削精度受到影响。作者采用了新型低温差半壁热管，降低温差，减少了主轴倾斜。实验表明：用热管均衡机床立柱温度均衡场是行之有效的。 MM7120 A-type precision surface grinder column temperature difference exists before and after, leading to the wheel spindle skew, so that the grinding accuracy affected. The authors adopted a new low-temperature half-wall heat pipe to reduce the temperature difference and reduce the spindle tilt. Experiments show that it is effective to balance the temperature field of the machine column with heat pipe.